Iphone 6+ 64Gb, actual memory is just 55.6Gb

Question

I have a Iphone 6+ 64Gb, the iphone reports a total capacity of just 55.6Gb memory.
Where are the lost 8.4 GB used for, or is this a hardware failure?.
I use 10.9 Gb the iphone reports 44.7 Gb as available.
Thanks in advance for your comments
Cees

Answer 1

The 1.073.741.824 bytes they state as being the actual value of a GB doesn't add up to what the memory size ought to be. Doing some rough math you come up to 1/1.074 by exaggeration (you loose more space with this approximation) that adds up to a factor of roughly 0,93 which would be 93% of the actual advertised space.
So the memory values we should have marked as capacity under info are:
On 16GB - 14GB
On 64GB - 59GB
On 128GB - 119GB
The accurate memory values are as follows:
16 GB
14.90116
64 GB
59.60464
128 GB
119.2093
So either apple is showing capacity as the real memory value minus de IOS8 requirements or we are all being duped
My recently bought 64GB iphone shows a capacity of 56.0GB which would mean that either the IOS8 has roughly 3.6GB of required space (for future updates and actual software) or we are not being told the whole story.
I also understand that different memory units of the same apparent size may vary slightly but that's supposedly why we are buying a premium product, to prevent big fluctuations and guarantee quality.
I would like to have this explained in detail now that we have the numbers out of the way